I have designed PN532 module with antenna(attached) 30mmX22mm to work with java cards. I wanted increase its range. is it possible to do by modifying registers or on software part.
i am using adafruit library.
My test result
with MIFARE classic the range is 3cm
NXP java-card J3A040 CL the range is 1cm
NXP daul interface java-card is less than 1cm